Home / 394,160.06-543,940.75-212,872.03

Finding the Fourth Proportional to 394,160.06, 543,940.75 and 212,872.03

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Solution

The fourth proportional to 394,160.06, 543,940.75 and 212,872.03 is: 293,763.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,160.06 : 543,940.75 = 212,872.03 : x
  2. Step 2: Convert to fraction form
    394,160.06/543,940.75 = 212,872.03/x
  3. Step 3: Cross multiply
    394,160.06x = 543,940.75 × 212,872.03
  4. Step 4: Simplify right side
    394,160.06x = 115,789,767,868.16
  5. Step 5: Solve for x
    x = 115,789,767,868.16/394,160.06
  6. Step 6: Final answer
    x = 293,763.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.